A researcher is asked to distribute medication to the participants of a study.Although each cup of medication is labeled with the participant's number,neither the researcher nor the participants know who is getting the placebo and who is getting the actual treatment.What type of experimental method does this example illustrate?
A)deception procedure
B)researcher blindness procedure
C)placebo effect procedure
D)double-blind procedure

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The Answer of A researcher is asked to distribute medication to the participants of a study.Although each cup of medication is labeled with the participant's number,neither the researcher nor the participants know who is getting the placebo and who is getting the actual treatment.What type of experimental method does this example illustrate?
A)deception procedure
B)researcher blindness procedure
C)placebo effect procedure
D)double-blind procedure

A Researcher Is Asked to Distribute Medication to the Participants